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WO2011003181A1 - Système d'authentification en fonction de l'allure - Google Patents

Système d'authentification en fonction de l'allure Download PDF

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Publication number
WO2011003181A1
WO2011003181A1 PCT/CA2010/001002 CA2010001002W WO2011003181A1 WO 2011003181 A1 WO2011003181 A1 WO 2011003181A1 CA 2010001002 W CA2010001002 W CA 2010001002W WO 2011003181 A1 WO2011003181 A1 WO 2011003181A1
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WO
WIPO (PCT)
Prior art keywords
data
user
loop
characteristic
signature
Prior art date
Application number
PCT/CA2010/001002
Other languages
English (en)
Inventor
Todd D. Gray
Sameer Valiyani
Vladimir Polotski
Original Assignee
Autonomous Identity Management Systems Inc. - Aims
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autonomous Identity Management Systems Inc. - Aims filed Critical Autonomous Identity Management Systems Inc. - Aims
Priority to US13/581,633 priority Critical patent/US9188963B2/en
Priority to CA2791403A priority patent/CA2791403C/fr
Publication of WO2011003181A1 publication Critical patent/WO2011003181A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B1/00—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/1036—Measuring load distribution, e.g. podologic studies
    • A61B5/1038—Measuring plantar pressure during gait
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/117—Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6804—Garments; Clothes
    • A61B5/6807—Footwear
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/20—Movements or behaviour, e.g. gesture recognition
    • G06V40/23—Recognition of whole body movements, e.g. for sport training
    • G06V40/25—Recognition of walking or running movements, e.g. gait recognition
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/30—Individual registration on entry or exit not involving the use of a pass
    • G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
    • G07C9/37—Individual registration on entry or exit not involving the use of a pass in combination with an identity check using biometric data, e.g. fingerprints, iris scans or voice recognition

Definitions

  • the present invention relates to biometric
  • the present invention relates to a biometric system based on an individual's gait.
  • Security authentication systems generally come in a number of categories. Card or fob based systems use cards or fobs which, when swiped or placed near readers, authenticate their holder as being
  • Biometric systems require that the user use a biometric reader so that a biometric reading (usually a retina scan, a fingerprint, or any other known biometric based indicia) can be taken.
  • biometric reading usually a retina scan, a fingerprint, or any other known biometric based indicia
  • Password/passcode based systems require a user to enter in a password/passcode for authentication.
  • passwords/passcodes can be stolen.
  • cards and fobs can also be stolen and/or duplicated.
  • passwords/passcodes can be forgotten while cards and/or fobs can be lost.
  • the present invention provides systems and methods for authenticating users based on their gait.
  • a sensor module with multiple sensors is placed inside a user' s shoe and biometric data is gathered from the sensors when the user takes a step.
  • the data gathered from each of the sensors is then received by a data processing module.
  • the data is processed and compared with a stored signature from an authenticated user. If the processed data does not match the stored signature within predetermined limits, then the user using the system is not authenticated. An alarm may then be generated. If, on the other hand, there is a match, the user is authenticated and this
  • authenticated result can be used to give the user access to restricted resources.
  • the present invention provides a method for determining if a user of a device is an authenticated user, said device having a plurality of sensors for biometric data, the method comprising: a) selecting two of said plurality of sensors; b) gathering data from each sensor selected in step a) ; c) correlating data gathered from said two sensors such that data points gathered at similar instances are matched with one another to result in data pairs; d) determining at least one characteristic loop from said data pairs, each characteristic loop being a loop formed when said data point pairs are plotted; e) retrieving signature characteristic data, said signature characteristic data being derived from data resulting from biometric data from said authenticated user; f) determining a signature characteristic loop from said signature characteristic data; g) comparing characteristics of said at least one characteristic loop determined in step d) with characteristics of said signature characteristic loop determined in step f ) ; h) in the event a comparison of said
  • step g) characteristics compared in step g) produces results not within predetermined limits, determining that said user is not said authenticated user; i) in the event a comparison of said
  • the present invention provides a system for authenticating a user of said system, the system comprising:
  • a sensor module comprising at least one sensor for gathering gait-based biometric data from said user - a data storage module for storing data relating to a signature loop, said signature loop being a loop resulting from a plot of data pairs derived from data gathered from said sensor module when an authenticated user used said system
  • a data processing module for receiving data from said sensor module, said data processing module being for determining characteristic loops from said data received from said sensor module and for comparing characteristics of said characteristic loops with characteristics of said signature loop
  • said user is authenticated when said characteristics of said characteristic loops are within predetermined limits of said characteristics of said signature loops .
  • FIGURE 1 is a block diagram of the system according to one aspect of the invention.
  • FIGURE 2A is an image illustrating the different
  • FIGURE 2B is a diagram illustrating different zones on an insole according to one embodiment of another aspect of the invention.
  • FIGURE 3 illustrates raw data waveforms and data waveforms after a low pass filter has been applied;
  • FIGURE 4 illustrates loops plotted using raw data and filtered data
  • FIGURE 5 illustrates a number of characteristic for different sets of data from the same user as well as an average characteristic loop derived from the other loops;
  • FIGURE 6 illustrates the different characteristics which may be derived from the characteristic loops
  • FIGURE 7 illustrates characteristic loops using highly correlated data
  • FIGURE 8 shows average characteristic loops for
  • FIGURE 9 is a flowchart illustrating the steps in a method according to another aspect of the invention.
  • the system 10 includes a sensor module 20 coupled to a data processing module 30 and which may receive data from a storage module 40.
  • the sensor module 20 having multiple sensors 2OA, generates biometric data from the sensors (biometric data based on the user's gait) which is then sent to the data processing module 30.
  • the data processing module 30 then processes the biometric data and retrieves signature data from the storage module 40.
  • the signature data comprises data that was gathered from the authenticated user to whom the system has been assigned and who should be using the system.
  • the data processing module compares the signature data with the biometric data gathered from the multiple sensors. If a match is found (within predetermined tolerances), then the user is
  • the system either reprocesses the data, gathers new data, or generates a signal indicating no match.
  • the system may include a communications module 50 that is coupled to the data processing module 30.
  • the communications module 50 may send and/or receive communications regarding the comparison between the signature data and the data gathered from the sensors.
  • the communications module 50 may send a signal indicating a non-match or a match between the two sets of data.
  • the user using the authentication system may either be granted access to restricted resources or such access may be withheld.
  • the lack of a match may also generate alarms within the larger security system.
  • the sensor module is an insole positioned inside the user's shoe, with the insole having multiple discrete force sensors that detect the amount of force exerted on a section or region of the insole.
  • a user's gait can be profiled as being the amount of pressure that that user exerts on each region over time as the user takes a step.
  • a variant of this sensor module would have at least one strain gauge positioned such that the pressure exerted on each of the multiple regions of the foot are detected by the gauge with each region corresponding to a section of the strain gauge. With such an arrangement, each section of the strain gauge thus acts as a different discrete sensor.
  • FIGs 2A and 2B a schematic illustration of a number of discrete pressure zones on an insole is illustrated.
  • Fig 2A shows an imprint of a human foot and the unique pressure points for a specific person.
  • Fig 2B illustrates the location of 8 specific pressure zones or areas on one embodiment of a pressure sensing insole.
  • Each zone in Fig 2B has a pressure sensing pad or sensor assigned to it such that the pressure exerted on each zone can be measured.
  • a variant of this sensor module would have, instead of discrete sensor pads at each zone, a single strain gauge positioned as described above.
  • each sensor in the sensor module produces a signal linearly proportional to the force being applied to the sensor.
  • each sensor or zone would have a data channel dedicated to its readings for transmitting those readings to the data processing module.
  • the readings can be time division multiplexed on to a single data line from the sensor module to the data processing module.
  • the data is passed through a single A/D converter to produce multiplexed channels, one for each sensor.
  • FIG 2B While there are eight zones in Fig 2B, other variants may have more or less than eight zones .
  • the user's insole is equipped with accelerometers at different sections of the foot.
  • At least one accelerometer can be positioned at the heel and at least one accelerometer can be positioned at the toe of the user.
  • Each accelerometer can provide data as to the roll, pitch, and yaw (in 3 dimensional coordinates) of the insole as the user is walking. The roll, pitch, and yaw for each
  • accelerometer can thus be the data points sensed and transmitted from the sensor module to the data processing modules.
  • each sensor produces several hundred samples equating to approximately ten steps taken by the user. This data stream is then saved and examined by the data processing module and the actual step points are determined. Each step is identified and the saved data stream resampled at a precise rate of approximately 100 samples per step.
  • the parameters extracted from the data stream may then be compared directly or indirectly with the signature data noted above .
  • the parameters extracted are used to derive a shape or loop, the characteristics of which can the compared with characteristics of a signature loop or shape.
  • a loop or shape allows for an indirect comparison between the data read by the sensor module and the signature data. As well, it allows for more complex comparison schemes and for easier use of tolerances in the comparison.
  • a preferable preliminary step to the correlation step is that of applying a low pass filter to both sets of data.
  • a low pass filter would remove the low frequency components of the signals and would provide cleaner and easier to process signals.
  • Figures 3-8 are provided to aid in the understanding of the process.
  • data streams are first received from all of the sensors for a given fixed duration.
  • the data stream for the given duration is saved by the data processing module.
  • the resulting waveform for each sensor is then partitioned to determine discrete steps taken by the user. If the sensors are force/pressure sensors, this partitioning may be done by searching for peaks and valleys in the waveform. Each peak would denote a maximum force applied to the sensor and each valley would denote a minimum (if not absence) of force.
  • each step can then be seen as two valleys with a peak in between, representing the user's foot in the air, the actual step, and then user lifting his/her foot again.
  • each step might be seen as two peaks bookending a valley.
  • Fig 3 two raw data streams is shown at the bottom of the plot. After a low pass filter is applied to the signals, the smoother waveforms are shown at the top half of Fig. 3. From Fig. 3, one can see maxiumum force applied to the force pads for the two steps captured by the waveforms.
  • each step for each sensor is then resampled to arrive at a
  • each sample is for a predetermined time frame and at a predetermined point in time in the current step.
  • the first sample is taken at the first one thousandths of a second in the waveform and the second sample is taken at the second one thousandths of a second and so on and so forth.
  • This method essentially synchronizes all the samples such that it would be simple to determine all samples (from all the sensor readings) taken at the first one thousandths of a second or all samples taken at the first fiftieth one thousandths of a second as the relevant samples would all be similarly time indexed.
  • any two of the sensors and the data they produced can be selected for comparison with the signature data noted above and which is stored in the data storage module.
  • the signature data stored in the data storage module may take numerous forms. In one example, multiple data sets/pairs (either filtered or as raw data) from the
  • authenticated user may be stored so that a signature loop may be derived from the signature data whenever the characteristics of that signature loop are required. For this example, all the data pairs from all sensors would be stored so that any two sensors may be selected. Alternatively, the specific
  • characteristics of the signature loop may be stored as the signature data if one wanted to dispense with determining the signature loop every time a comparison needs to be made.
  • only the data relating to the average signature loop derived from the authenticated user may be stored as signature data.
  • all the raw data (either filtered or not) from the authenticated user' s steps may be stored as signature data.
  • Such a configuration would allow for the greatest amount of flexibility as the system could randomly select any two of the sensors to be used and the signature data from the authenticated user would be available for those two sensors. As noted above, this configuration would require that the signature loop be calculated every time a comparison is required.
  • the signature data may, if desired, be stored in encrypted format.
  • [A[n] , B[n] ⁇ thus constitutes a data pair for the nth reading for that particular step.
  • this is not surprising as the force exerted by the foot in a particular step increases to a maximum and then decreases to as minimum as the person increases the weight the place on the foot and then removes that weight as the step progresses.
  • Fig 3 shows the waveforms for two signals - the lower waveform being the raw data stream waveforms for 2 signals and the upper waveforms for the same 2 signals after a low pass filter has been applied.
  • Fig 4 shows a plot of the two sets of waveforms in Fig 3.
  • One loop in Fig 4 is derived from the raw signal waveforms in Fig 3 while the other loop is derived from the low pass filtered waveform in Fig 3.
  • a smoother loop is produced by the low-pass filtered signals.
  • the x-axis in Fig 4 contains the values gathered from the first sensor selected while the y-axis contains the values gathered from the second selected sensor. It should be noted that while the embodiment discussed uses only a pair of sensors, the concept is applicable for 3, 4, or any number of sensors. If data from 3 sensors were used, then, instead of a 2D loop, a 3D loop may be created as a characteristic loop. It should be noted that a loop can be formed for each one of the steps captured by the sensors. An averaged loop can be derived from the various loops formed from all the steps captured by the sensors. Referring to Fig 5, the various loops from the various steps can be seen on the plot.
  • the length of the loop (measured from the origin) , the width of the widest part of the loop, and the area occupied by the loop are just some of the
  • characteristics which may be determined from the loop As well, the direction of the loop (whether it develops in a clockwise or anti-clockwise manner) may also be seen as a characteristic of the loop. Another possible characteristic of the loop may be the angle between a ray from the origin to the farthest point of the loop. Additional characteristics of these loops may, of course, be used depending on the configuration of the system.
  • Fig 7 shows loops resulting from highly correlated data from the sensors.
  • Such highly correlated data may produce loops that, at first glance, may not be overly useful. However, even such lopsided loops may yield useful characteristics.
  • the amplitude from the furthest point may be used for an initial assessment of static of dynamic weight distribution.
  • the characteristics for this average loop can be derived. Once derived, the same process is applied to the signature data stored in the storage module. The characteristics for the resulting signature loop (from the signature data) are then compared to the characteristics of the average loop from the data acquired from the sensors.
  • Fig 8 a comparison of two average loops from the gait of two individuals is illustrated. As can be seen, the characteristics of the two loops are quite different. One loop is clearly larger (more area) , longer (length of loop) , and wider (width at widest of the loops) than the other loop. It should be noted that custom tolerances can be applied to the comparison. Depending on the tolerance applied, the comparison can be successful (the characteristics match within the tolerances) or unsuccessful (even within the tolerances, there is no match) .
  • tolerances these can be preprogrammed into the system and can be determined when the signature data is gathered. As an example, a tolerance of 15% may be acceptable for some users while a tolerance of only 5% may be acceptable. This means that if the calculated characteristic of the average loop is within 15% of the calculated characteristic of the signature loop, then a match is declared. Similarly, if a tolerance of only 5% is used, then if the calculated characteristic of the average loop is within 5% of the calculated characteristic of the signature loop, then a match is declared. Of course, if the calculated characteristic of the average loop is not within the preprogrammed tolerance of the calculated characteristic of the signature loop, then a non-match is declared.
  • the system may use a graduated system of matches or matching. This would mean that a level of confidence may be assigned to each match, a high level of confidence being an indication that there is a higher likelihood that there is a match between the two sets of data derived from the average loop and the signature loop. A match can then be declared once the level of confidence assigned is higher than a predetermined level. A non-match can similarly be declared once the level of confidence is lower than a predetermined level. A level of indecision can be declared when the level of
  • the signature data is preferably done when the user who is to be the authenticated user is first assigned the insole/sensor module. This is done by having the authenticated user use the insole/sensor module by taking a specific number of normal steps. These steps are then captured in the system and are stored as signature data. Once stored, the signature data can be retrieved and various characteristics of the signature data (by way of the signature loop) can be determined as described above. As described above, the signature data stored may take any number of forms. The signature data may be the raw data gathered from the authenticated user when s/he took the specific number of normal steps. Alternatively, the signature data may be the filtered version of the raw data or it may be the various characteristics of the various possible signature loops.
  • the waveforms themselves may be stored as signature data.
  • the signature data may take any form as long as the characteristics of the signature loops may be derived from or be extracted from the signature data. Referring to Fig 9, a flowchart of the process described above is illustrated.
  • the initial step 100 in the process is that of selecting two of the sensors to be used in the comparison process.
  • the sensors are, in one embodiment, inserted or installed in a user's show. Once the sensors have been selected, data is gathered from these sensors as the user walks normally (step 110) . Once gathered from the sensors, the data is then correlated with one another to form the data pairs noted above (step 120) . This means that data points from one sensor is mated with data points from another sensor. With the data pairs in hand, at least one characteristic loop can then be created/derived from the data pairs (step 130) .
  • each step may have its own characteristic loop.
  • an average characteristic loop may be derived from the data values from the sensors.
  • the signature data can be retrieved (step 150) .
  • the signature data depending on configuration can then be used to determine the signature loop (step 160) .
  • the characteristics of both the average characteristic loop and the signature loop can then be calculated or derived from the two sets of data (step 170) .
  • the characteristics are then compared (step 180), taking into consideration the preprogrammed tolerances.
  • step 190 determines whether the characteristics from the two sets of data are the same (step 190) (within the preprogrammed tolerances) then a match is found (step 200) and the user is then authorized (step 210) . If they are not within the preprogrammed tolerances, then no match is found (step 220) and the user is not authorized (step 230) .
  • the first processing step after retrieving the data is one where the pair sensor signals are filtered applying DFT (Discrete Fourier Transform) based low- pass filter.
  • the cut-off frequency of the filter is defined taking into account a Nyquist frequency (related to the sampling rate) on the high end, and a main signal frequency (related to the walking speed of the individual) on the low end. Walking frequency estimation is also a part of the described processing step .
  • a low pass filter with flat pass-band (low ripple) high stop band attenuation may be used. Additional advantage is taken from the use of non-causal filters since the hard-real-time processing is not required (signals are registered first and then filters are applied) .
  • the second processing step is a construction of the characteristic loop for the chosen pair of signals.
  • the characteristic loop is an ordered set of points with coordinates (X(i),Y(i)) where X(i) is a first chosen signal and Y(i) is a second chosen signal, I is an index corresponding to the sample number.
  • characteristic loops Due to quasi-periodicity of all signals resulting from the nature of human walking, characteristic loops can be constructed autonomously for several periods in time. Although initially defined for raw signals, autonomous loops can then be constructed for smoothed signals (obtained after the first step processing described above) .
  • the third processing step is that of averaging the loops.
  • Several loops are constructed according to the recording of several steps while the person is walking. Those steps and respectively those loops are subject to significant variations. It has been found that only the average loop provides a stable and robust characteristic of human walking.
  • the fourth processing step consists of extracting initial geometrical parameters from the average loop such as loop length, loop width, direction of longitudinal axes, loop directionality (clockwise or counter-clockwise) and the area inside the loop. Other characteristics/parameters which can be used are the variance of each parameter listed above as computed for individual walking steps and as compared to the average value (computed from average loop) .
  • Geometrical method - identify a point on the loop farthest from the origin (let us call it M) this point is further used to find the length (
  • the directionality of the loop is related to the phase shift between signal Y and signal X. Namely the loop is clockwise if Y signal grows from low level to maturity first, followed by the growth of X signal.
  • the fifth processing step consists of analysing
  • the sixth processing step consists of comparing the loops computed from 2 separately recorded data. It has been found that the high discrimination efficiency of the proposed parametric representation of the pair- wise average loops (see Fig. 8 as an example) . Namely, for several pairs of signals/sensors extracted from the set of 8 signals/sensors, the average loops constructed from the smoothed signals stably
  • the seventh processing step consists of combining the results of the comparison of several (up to all 56 possible pairs from 8 different sensors/signals) pairs in order to produce a highly efficient discriminate function. Results from various pairs are first weighted according to the number of parameters that can be robustly estimated to support the comparison of the loops. Finally, the results from various pairs can be fused using Dempster- Shaefer framework for an estimation of the likelihood that 2 individuals who used the system are identical or not.
  • the system described above may be used in any number of ways.
  • the system may be interrogated, by way of the communications module, by an outside security system to determine if the user has the same gait as the authenticated user.
  • the system may, depending on the implementation, simply send a positive or negative indication, an indication that reflects whether there was a match or not between the characteristics of the average loop and the characteristics of the signature loop. With such an implementation, the user's gait (or the characteristics of the average loop) never leaves the system.
  • the system only checks for a match when the system receives an external interrogation signal. Upon receipt of such a signal, the system may start sampling the user's steps .
  • all of the data processed by the data processing module is internally encrypted so that external systems would not be privy to the raw data transferred between the sensor module and the data processing module.
  • the data Prior to transmitting the raw data from the sensor module to the data processing module, the data may be automatically encrypted.
  • the data processing module may be physically remote from the sensor module and, as such, the data transmissions between these modules may be vulnerable to the outside.
  • the data processing module is contained within the insole to ensure that any data transfers between the modules are slightly more secure.
  • any useful data processing means may be used with the invention.
  • ASICs, FPGAs, general purpose CPUs, and other data processing devices may be used, either as dedicated processors for the calculations or as general purpose processors for a device incorporating the invention.
  • the method steps of the invention may be embodied in sets of executable machine code stored in a variety of formats such as object code or source code. Such code is described generically herein as programming code, or a computer program for simplification. Clearly, the executable machine code may be integrated with the code of other programs, implemented as subroutines, by external program calls or by other techniques as known in the art.
  • the embodiments of the invention may be executed by a computer processor or similar device programmed in the manner of method steps, or may be executed by an electronic system which is provided with means for executing these steps .
  • an electronic memory means such computer diskettes, CD-Roms, Random Access Memory (RAM) , Read Only Memory (ROM) or similar computer software storage media known in the art, may be programmed to execute such method steps.
  • electronic signals representing these method steps may also be transmitted via a communication network.
  • Embodiments of the invention may be implemented in any conventional computer programming language
  • preferred embodiments may be implemented in a procedural programming language (e.g. "C") or an object oriented language (e.g. "C++").
  • Alternative embodiments of the invention may be implemented as pre-programmed hardware elements, other related components, or as a combination of hardware and software components.
  • Embodiments can be implemented as a computer program product for use with a computer system. Such
  • implementations may include a series of computer instructions fixed either on a tangible medium, such as a computer readable medium (e.g., a diskette, CD- ROM, ROM, or fixed disk) or transmittable to a computer system, via a modem or other interface device, such as a communications adapter connected to a network over a medium.
  • a computer readable medium e.g., a diskette, CD- ROM, ROM, or fixed disk
  • the medium may be either a tangible medium (e.g., optical or electrical
  • a computer program product may be distributed as a removable medium with accompanying printed or electronic documentation (e.g., shrink wrapped software), preloaded with a computer system (e.g., on system ROM or fixed disk) , or distributed from a server over the network (e.g., the Internet or World Wide Web) .
  • a computer system e.g., on system ROM or fixed disk
  • a server e.g., the Internet or World Wide Web
  • some embodiments of the invention may be implemented as a combination of both software (e.g., a computer program product) and hardware.
  • Still other embodiments of the invention may be implemented as entirely hardware, or entirely software (e.g., a computer program product) .
  • a person understanding this invention may now conceive of alternative structures and embodiments or

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Abstract

L'invention concerne des systèmes et des procédés permettant d'authentifier des utilisateurs en fonction de leurs allures. Un module de capteur doté de multiples capteurs est placé à l'intérieur de la chaussure d'un utilisateur, et des données biométriques sont regroupées à partir des capteurs lorsque l'utilisateur fait un pas. Les données regroupées à partir de chacun des capteurs sont ensuite reçues par un module de traitement de données. Les données sont traitées et comparées à une signature mémorisée d'un utilisateur authentifié. Si les données traitées ne correspondent pas à la signature mémorisée dans les limites prédéfinies, l'utilisateur qui utilise le système n'est pas authentifié. Une alarme peut ensuite être générée. En revanche, s'il existe une correspondance, l'utilisateur est authentifié et ce résultat authentifié peut être utilisé pour donner à l'utilisateur un accès aux ressources restreintes.
PCT/CA2010/001002 2009-07-06 2010-07-06 Système d'authentification en fonction de l'allure WO2011003181A1 (fr)

Priority Applications (2)

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US13/581,633 US9188963B2 (en) 2009-07-06 2010-07-06 Gait-based authentication system
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US20130200996A1 (en) 2013-08-08
CA2791403A1 (fr) 2011-01-13
CA2791403C (fr) 2017-10-17

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